I disagree completely. If a monster does a bunch of damage, there's no real need to break it down for the players- nor should you. The monsters should remain thoroughly behind the dm's 'curtain' imho.
I agree to an extent. Part of a good fight is explaining that "when the kobold sees his attack connect(he hits), he forces more power into the swing." no, it's not breaking it down for the players, but it's making them understand the opponent did something
special in the attack to make it worse.
Your players are fighting toe-to-toe with these creatures, so while they shouldn't see their stats, their skills, their PCs can
see what their opponents are doing. And therefore recognize when they do something special.
Yes you can. I don't think accommodating whiners is a good solution; it just teaches them that they get their way when they whine and encourages them to continue.
Depends on what you're accomodating. If the player is complaining because you roll the dice so fast they can't keep track of it all, that's a good thing to accomodate. If the player is complaining because a monster does too much damage(in their mind), that's not.
Not that I'm saying there's never any room for compromise, but when you've approached the player directly and multiple times about the unfun he's causing in your game and he hasn't changed, at a certain point you move on to other players. There's no point in changing up a game that everyone is enjoying except when the problem player acts up if it means one player (the problem guy) gets his way and everyone else has less fun.
An unfun player is a player who expresses their discontent in a way that is easy to catch. Assuming that they are the only one just because you only catch their discontent is a faulty assumption. There may be others who agree, but their discontent is not so readily vocalized. They may be the proverbial "postal worker", who suddenly snaps in one game and unleashes all their malcontent in one burst. They could be the "vanisher" who just starts not showing up to games, claiming they're "busy".
Really, the argument that a dm should refit his game for the problem player is a bit like saying that schoolyards should change the rules to suit the bullies.
The DM should ensure that the problem player is unique before making any changes to their game. Otherwise the problem could get worse if they don't take the time to ensure that.